Denso Corporation

Denso Corpora Tion

Yoshinori Yanagimachi

Makoto Umebayashi

Tomohiro Inada

Terukazu Higuchi

Yasuhiro Yokoo

Yoshinori Ichishi

Takashi Yamamoto

Yasuhiko Niimi

Motohiro Yamaguchi

Satoshi Izawa

Tatsumi Kumada

Hisashi Tanaka

Yasuhiro Sagou

Manabu Maeda

Koji Ota

Shinichirou Hirai

Akira Umehara

Yasushi Kondo

Shinji Naruse

Koji Wakabayashi

Kei Okada

Shinichi Naganuma

Tatsurou Kyuto

Kouichi Itoh

Kazushige Ogawa

Makoto Uto

A refrigeration cycle device includes: a switching valve configured to switch between a battery mode in which refrigerant flows to a battery heat exchanger and a non-battery mode in which the refrigerant bypasses the battery heat exchanger; and a controller controlling a compressor and the switching valve. The controller includes an estimation unit configured to estimate an oil stagnation amount, which is an amount of lubricating oil accumulated in the battery heat exchanger in accordance with execution of the non-battery mode. The controller includes a determination unit configured to determine whether lubricating oil in the battery heat exchanger needs to be recovered on the basis of the oil stagnation amount. The controller includes an execution unit configured to execute an oil recovery mode for recovery of lubricating oil in the battery heat exchanger when the determination unit determines that lubricating oil needs to be recovered.

Refrigeration cycle device

A vehicle air conditioner includes a heat pump cycle and a refrigerant-circuit controller. The heat pump cycle includes an inside heat exchanger and a refrigerant-circuit switching device. The inside heat exchanger performs heat exchange between a refrigerant and a blown air that is to be blown into a vehicle compartment. The refrigerant-circuit switching device switches between a refrigerant circuit of a cooling mode and a refrigerant circuit of a non-cooling mode. The refrigerant-circuit controller selects the cooling mode or the non-cooling mode based on an air-conditioning load, the refrigerant-circuit controller controlling an operation of the refrigerant-circuit switching device. Upon selecting the non-cooling mode, the refrigerant-circuit controller starts performing a cooling-mode unallowable control in which the refrigerant circuit of the cooling mode is prohibited from being selected regardless of the air-conditioning load.

Vehicle air conditioner

When a battery control unit allows use of the electric compressor, an air conditioning control unit performs air-conditioning of a cabin in such a manner that the air conditioning control unit controls the electric compressor to be operated. When the battery control unit prevents use of the electric compressor, the air conditioning control unit controls the electric compressor to be stopped. In addition, the air conditioning control unit heats a windshield in such a manner that the air conditioning control unit controls a window heater to be operated. Accordingly, even when the electric compressor is stopped, fogging of the windshield is suppressed. The air conditioning control unit does not give an excessive feeling of discomfort or unease to a user, because the air conditioning control unit continuously performs a normal air-conditioning control. Fogging of the windshield can be suppressed in a state where power consumption relative to a battery is suppressed.

Electric vehicle air-conditioning device

A vehicle air conditioner includes a blower for blowing air into a space of a vehicle compartment, and an air-conditioning mode switching portion for switching between air conditioning modes. The air conditioning modes include a normal air conditioning mode in which air conditioning of a specific region including a driver seat and air conditioning of a non-specific region not including the specific region in the space of the vehicle compartment are performed, and a specific-region prioritizing air conditioning mode in which an air conditioning capability for the non-specific region is decreased as compared to the normal air conditioning mode. The air-conditioning mode switching portion adjusts the air conditioning capability for the non-specific region based on a pressure of air drawn into the blower, in the specific-region prioritizing air conditioning mode.

Air conditioner for vehicle

An air conditioner for a vehicle includes a cycle switching device. The cycle switching device switches a refrigerant cycle between a heating circuit, in which refrigerant flows through a heating heat exchanger, and a cooling circuit, in which refrigerant flows through a cooling heat exchanger. The air conditioner further includes an air conditioning controller, which controls the cycle switching device and includes a defroster control portion. The defroster control portion increases a temperature of air blown into the vehicle compartment through a defroster air outlet by a predetermined degree while keeping the refrigerant cycle at a state of the heating circuit for a predetermined time, when a defrosting operation is commanded to be performed during the heating circuit.

Air conditioner for vehicle with defroster control

A piping connection device includes a female block member fixed integrally with a male block member, and a first pipe is inserted into the female block member. The piping connection device further includes a drain passage through which a part of an outer peripheral surface of the first pipe communicates with an outer surface of the female block member. The drain passage is disposed in a portion higher in heat capacity than the other portions in the female block member.

Piping connection device and heat pump cycle device having same

An air-conditioner conducts an air-conditioning for a passenger compartment of a vehicle, and has an eco-mode to save energy. The air-conditioner includes a seat temperature control system and a controller. The seat temperature control system is configured to operate to heat or cool a seat in the passenger compartment. The controller automatically activates the seat temperature control system when the eco-mode is set.

Air-conditioner for vehicle

A control unit for an air conditioning system for a motor vehicle calculates a target blowing air temperature based on a temperature of a passenger's clothing detected by a no contact temperature sensor. An air conditioning operation is performed based on the calculated target blowing air temperature. In particular, when calculating the target temperature in the summer or in the winter season, a change of the detected temperature of the passenger's clothing is used, so that the change of detected temperature is reflected in the target temperature with a time delay.

Air conditioning system for motor vehicle

An air conditioner for a vehicle is provided with an air conditioning unit for blowing conditioned air to a passenger compartment of the vehicle, multiple seat air conditioning units for respectively controlling temperatures of seats of the vehicle, and a control unit for controlling the air conditioning unit and the seat air conditioning units. The larger the difference between a target blowing-out temperature of the air conditioning unit and a compartment setting temperature of the passenger compartment, the larger the degree of influence of the target blowing-out temperature on a seat target blowing-out temperature in the calculation of the seat target blowing-out temperature, based on which the seat air conditioning unit is controlled.

When it is assumed that a vehicle is stopped or parked after its engine was stopped and a predetermined period of time has passed, a cold wind side air mixing door, hot wind side air mixing door, cold wind door and rear cold wind side air mixing door are totally closed and a blower is operated for a predetermined period of time. Accordingly, while a cooler is being dried, drying air containing much offensive smell components, which has passed through the cooler, is discharged outside the vehicle. Therefore, it is unnecessary to provide an exclusively used air passage and an opening and closing door for opening and closing the air passage used for composing an air blowing passage to dry the cooler. By utilizing the existing equipment, air used for drying, which has passed through the cooler, containing much offensive smell components can be discharged outside the vehicle.

Air conditioner for vehicle use

A vehicle air conditioner has an air conditioning unit and an air conditioning control unit. The air conditioning unit has a FACE blowout port, a DEF blowout port, an upper blowout port. The air conditioning control unit estimates an outside windshield temperature and determines an outside dew point temperature. The control unit also controls the upper blowout port to stop blowing or not based on the estimated outside windshield temperature and the outside dew point temperature in a face mode to prevent the windshield from fogging.

A control device is provided in a vehicle to control an air conditioning apparatus and thereby to control ventilation and air conditioning of a passenger room of the vehicle. A mobile device communicates with the control device in a parked state of the vehicle to selectively control a first device, which performs ventilation of the passenger room, and a second device, which performs air conditioning of the passenger room, of the air conditioning apparatus in such a manner that at least one of the first device and the second device is selectively operated upon reception of a corresponding operational instruction from the operating device.

Remotely operable air conditioning system for vehicle

A ventilation and deodorization system includes a door lock switching unit for performing a locking and an unlocking of a vehicle door, an air conditioner which introduces outside air of a passenger compartment of the vehicle and blows the introduced outside air into the passenger compartment in a ventilation operation, and a control device for controlling its operation. When a door unlocking request signal is received as a remote operation signal by a receiving unit, the door lock switching unit performs the unlocking of the vehicle door, and the air conditioner performs the ventilation operation. Alternatively, an air cleaning operation is performed instead of the ventilation operation, while inside air of the passenger compartment is cleaned and circulated by an air cleaning device. Thus, the ventilation operation or the air cleaning operation can be performed while a battery consumption amount can be reduced.

Growing community of inventors

Takahama, Japan

Yoshinori Yanagimachi